caa a22 4500 397581785 CHVBK 20180308164909.0 cr unu---uuuuu 161202e199601 xx s 000 0 eng 10.1093/cercor/6.1.21 doi (NATIONALLICENCE)oxford-10.1093/cercor/6.1.21 PET Studies of Phonetic Processing of Speech: Review, Replication, and Reanalysis [Elektronische Daten] [Robert J. Zatorre, Ernst Meyer, Albert Gjedde, Alan C. Evans] Positron emission tomography was used to investigate cerebral blood flow (CBF) changes associated with the processing of speech. In a first experiment, normal right-handed volunteers were scanned under two conditions that required phonetic processing (discrimination of final consonants and phoneme monitoring), and one baseline condition of passive listening. Analysis was carried out by paired-image subtraction, with MRI overlay for anatomical localization. Comparison of each phonetic condition with the baseline condition revealed increased CBF in the left frontal lobe, close to the border between Broca's area and the motor cortex, and in a left parietal region. A second experiment showed that this area was not activated by a semantic judgment task. Reanalysis of data from an earlier study, in which various baseline conditions were used, confirmed that this region of left frontal cortex is consistently involved in phonetic tasks. The findings support a model whereby articulatory processes involving a portion of Broca's area are important when phonetic segments must be extracted and manipulated, whereas left posterior temporal cortex is involved in perceptual analysis of speech. © 1996 Oxford University Press Articles nationallicence Zatorre Robert J. Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut Meyer Ernst Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut Gjedde Albert Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut Evans Alan C. Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut Cerebral Cortex Oxford University Press 6/1(1996-01), 21-30 1047-3211 6:1<21 1996 6 cercor https://doi.org/10.1093/cercor/6.1.21 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/cercor/6.1.21 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zatorre Robert J. Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut NATIONALLICENCE 700 1- Meyer Ernst Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut NATIONALLICENCE 700 1- Gjedde Albert Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut NATIONALLICENCE 700 1- Evans Alan C. Neuropsychology/Cognitive Neuroscience Unit and McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada H3A 2B4 aut NATIONALLICENCE 773 0- Cerebral Cortex Oxford University Press 6/1(1996-01), 21-30 1047-3211 6:1<21 1996 6 cercor Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford